Electrically-heated apparatus.



T. HOOOK.

ELECTRICALLY HEATED APPARATUS. APPLICATION FILED 0012s, 1912.

Patented June 30, 191

!NVENTOR ATTORNEY rnnononn HOOCK, or connn, BAYENTHAL, GERMANY, Assmnonro wns'rrnenons' ELECTRIC AND MAJUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

ELECTBICALLY-HEATED APPARATUS.

Specification of Letters Patent. at t J n 39, 1 1g,

Application filed October 23, 1912. Serial No. 727,296.

- To all whom it may concern:

.Be it known that I, Tnnononn HoooK, a subject of the Emperor of Germany, and a resident of ,Coeln, Bayenthal, Germany, have invented a new and useful Improvement in thus accumulated may be available for various cooking operations at any desired rate.

The objectof my invention is to prov de a device of the above-indicated character that shallbe simple, compactand durable in construction and efiicient in operation, and have readily adjustable means whereby the distribution of heat within the oven may be regulated to suit the particular cooking operationthat is being performed. I My invention may best be understood by reference to the accompanying drawings in which Figure 1 is a view, partially in section and partially in front elevation, of a device constructed in accordance with my invention, and Fig. 2 is a view, partially in section and partially in side elevation, of the device shown in Fig. 1.

7 Referring to the drawing, the apparatus shown comprises a receptacle or shell 1 of heetstorage material'having a pluralityot walls 2, some of which are provided with openings to receive movable members} of a similar material, independent actuation 0t.

1 which to any desired position may be effectchanical means 4 and 5'.

ed through the agency of The mechanical means, just referred to, are conveniently disosed in a compartment 6 that is provided Ee'tween theshell l of'heat-storage material and a plurality of walls 7 of heat-insulating material whichen velop the inner shell of the oven and revent loss of heat by radiation. The she 1 1. of the device may be constructed of cast iron, although I do not wish to. berestricted in this respect as any matcr ial may be employed which is adapted to accumulate and store heat. The movab1e members 3 are preferably made-of materialadjustable me lik that which constitutes the main portions of the receptacle 1, although other suitable material may be employed, if desired.

Disposed immediately below the bottom wall of the oven is an electric heater 8 which forms no material part of my present inventron, except as it performs a necessary funct1on 1n the operation of the apparatus and, hence, any well known construction may be employed' The heater 8 is provided with leads 9'which terminate in a connection box 10 that is suitably located on the exterior of the oven for the purpose of connection to a suitable source of electrical energy (not shown).

The movable members 3are I rovided with inwardly inclined edges whic are adaptedto cooperate and makeintimate contact with similarly inclined edges of the walls 2 with which said members 3 are associated. The movable members 3 which constitute tions of the side walls 2 of the oven shel are of like construction and each is pivota y mounted at its upper end upon a rod or other suitable device. Furthermore, e oi? the movable members referred to is pre is d with an integrally associated arm 12 -w'h1 projects upwardly and is pivo'tally cenn ed to one end of a connecting rod Iother end of which is associated T v eccentric 14: in a well known manner. several eccentrics 14 are fixed to an ating shaft 15 which projects through front insulating wall 7 and the outer end thereof is provided with a hand wheel which is rigidly secured thereto.

The inner end. of the shaft 15 is jour "*1 in a bearing member 18, and the sees 14 are disposed upon said shaft so as effect concurrent operation of the side i? able members .3 when the shaft 15 is rotated through the agency of the hand wheel 16,, it being understood that said movable mem-- bers 3 are given an outward rotative movement when the hand wheel 16 is turned i a hand wheel l'fiflianda locking nut 19 simi lar to those hereinbefore described, and said shaft is journaled in suitable bearing members 18 which are secured to the shell or receptacle 1.. The movable member 3, which forms a part of the upper wall of the oven is provided with a plurality of supporting brackets 21 which are secured thereto, and said members are provided with end portions 22 which are disposed in substantially a horizontal plane. Rigidly disposed upon the shaft 20 and in cooperative engagement with the horizontal portions 22 of the bracket portions 21 are cam members 23. The contour of said. cams 23 is such that rotative movement of the shaft 20 causes the upper movable member 3 to be raised out of contact with the main portion of the upper wall of the heat storage shell 1.-

Assuming the several parts to occupy the positions shown in the drawing, it is evident that the upper portion of the oven is main 'tained at its highest temperatures by reason of the fact'that the edges of the several movable members 3 are in engagement with the adjacent edges of the heat storage shell 1 and, hence, the greatest amount of heat storage and heat conducting material is utilized, whereby the flow of heat from the electric heater 8 to the upper wall of the oven is maximum.

In certain cooking operations, it is desir able to have a comparatively low heat at the top of the oven and, in such cases, the ad' justable mechanical means 5 may be employed for raising the top movable member 3 out of contact with the adjacent edges of the upper wall, thereby interposing air gaps between this member and the upper walls and thus reducing the flow of heat and consequently the temperature of the upper porition of the oven. If it is desired to reduce the heat supplied to the sides of the material which may be disposed in the oven, the side movable members 3 may be actuated outwardly, through the agency of the mechanical means 4, as will be readily understood.

Those skilled in the art will experience no difiiculty in understanding that, by'reason of the adjustments just described, any desired distribution of heat within the oven 7 may be effected and, moreover, that similar results, may be accomplished by other means than those specifically set forth and suchmodifications as may be made without departing from the spirit and scope of my invention are intended to be covered by the appended claims.

I claim as my invention:

1. In a heating device, the combination with walls of heat-storage material having. openings therein, movable members dispdsed in said openings, means for heating said material, and heat-insulating materialenveloping said walls, of mechanical means for regulating the distribution of heat within device,

2. In heating device, the combination with walls of heat-storage material having openings therein, movable members disposed in said openings, ieans for heating said. walls, and heat-insulating material surrounding said walls, of mechanical means for adjusting the position of said movable members.

3. In a heating device, the combinationwith Walls of heat-storage material having openingsv therein, movable members dis posed in said openings, electrical means for heating said material, and an envelop of heat-insulating material surrounding said parts,of mechanical means for effecting); in-

dependent adjustmcnts oi said movable members.

4,. In a heating device, the combination with a receptacle of heat-storage material, means for heating the same, and walls of heat-insulating material enveloping said receptacle, of mechanical means ,for regulating the distribution of heat within said receptacle.

5. In a heating device, the combination with a receptacle of heat-storage material, means for heating said material, and walls of heat-insulating material. enveloping said receptacle, of means for adjusting the posi tions of portions of said receptacle.

6. In a heating device, the combination with a receptacle of heat-storage material, electrical means for heating the same, and wallsoi' heatinsulating material surround ing said receptacle, of mechanical'means for varying the amount of active heat-storage material composing the walls of said receptacle.

7. In a cooking device, the combination with an oven comprising walls of heat-storage material having openings therein, movable members adapted to fit into said openings, means for electrically heating said heat-storage material, and heat-insulating walls enveloping said oven, of adjustable mechanical means for varying the air between said' movable members and the main portions of said oven walls.

8. In a heating device, the combination with an oven comprising walls otheat-storage material having openings therein, piv-. otally mounted movable members adapted to fit into said openings, means for electrically heating said heat-storage material, and heat-insulating walls surrounding said oven, of means for effecting an outward rotative movement of said movable members about their pivotal supports, whereby changes in the distribution of heat within said oven are effected;

9. In an electrically heated oven, the combination with walls of heat-storage material,

one of said walls having an opening therein,

and heat-insulating material enveloping said Walls, of a movable member adapted to fit into said opening and to make inti-' portions, and independent means for lock ing said portions in position.

11. In a heating device, the combination with a. receptacle of heatfstorage material, means for heating the same, and Walls of heat-insulating material enveloping said receptacle, of means for apportioning the amounts of heat severally delivered to va' rious parts of the receptacle.

In testimony whereof, I have hereunto subscribed my name this 5th day of August,

' THEODORE .HOOCK. Witnesses:

LOUIS VANDORY, BESSIE F. DUNLAP. 

